<?php
/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Form
 * @subpackage Decorator
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
/**
 *
 * @see Zend_Form_Decorator_Abstract
 */
require_once 'Zend/Form/Decorator/Abstract.php';

/**
 * Captcha generic decorator
 * Adds captcha adapter output
 * @category Zend
 * @package Zend_Form
 * @subpackage Decorator
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Captcha.php 24593 2012-01-05 20:35:02Z matthew $
 */
class Zend_Form_Decorator_Captcha extends Zend_Form_Decorator_Abstract {

    /**
     * Render captcha
     * @param string $content
     * @return string
     */
    public function render ($content) {
        $element = $this -> getElement ();
        if ( ! method_exists ($element, 'getCaptcha')) {
            return $content;
        }
        $view = $element -> getView ();
        if (null === $view) {
            return $content;
        }
        $placement = $this -> getPlacement ();
        $separator = $this -> getSeparator ();
        $captcha = $element -> getCaptcha ();
        $markup = $captcha -> render ($view, $element);
        switch ($placement) {
            case 'PREPEND' :
                $content = $markup . $separator . $content;
                break;
            case 'APPEND' :
            default :
                $content = $content . $separator . $markup;
        }
        return $content;
    }

}
